Five-roll double-draft frame



July 7, 1953 J. D. FRIDAY ETAL I FIVE-ROLL DOUBLE-DRAFT FRAME Filed Nov. 18, 1949 3 Sheets-Sheet l 1mmmummmmlmnmmii' JAMES D. WILLIAM F. STILWELL INVENTORS Fm DAY 722 mm W ATTORNEYS Patented July 7, 1953 FIVE-ROLL DOUBLE-DRAFT James D. Friday and William F. Stilwell, Dallas, 7 N. 0., assignors of one-half to Forney D. Mays and Emery L. Williams, Dallas, N. 0., jointly Application November 18, 1949, Serial No. 128,094 4 Claims. (Cl. 19-130) This invention relates to spinning frames, and.

more particularly to a spinning frame spinning long draft textile fibers.

A main object of the invention is to provide a novel and improved spinning frame employed the finishing apparatus for completing the spinning operation on yarn, said frame being very simple in construction, providing a double-draft action on the spun yarn, and being particularly applicable in spinning long-draft nylon yarn and the like.

A further object of the invention is to provide an improved double-draft spinning frame for providing the final draft in spinning textile fibers, said frame being relatively inexpensive to manufacture, being easy to install, involving only a few parts, preventing the formation of slugs or kinks in the spun yarn, and providing a practical means of long-draft spinning of nylon yarn.

Further objects and advantages of the invention will become apparent from the following defor scription and claims, and from the accompanying drawings, wherein:

Figure 1 is a vertical transverse cross-sectionalview taken through an improved long-draft, yarn-spinning machine constructed in accordance with the present invention; Figure 2 is a fragmentary top plan view of the spinning frame of Figure 1;

Figure 3 is a fragmentary front elevational view of the spinning frame of Figure 1.

Figure 4 is a vertical transverse cross-sectional.

view taken on line.4--4 of Figure 3. Referring to the drawings,

shafts 23, 24, 25 and 26, each shaft carrying spaced pressure rollers shown at 21, 28, 29 and 30. Journaled in the end portions of the bracket members l4, l below the rollers 30' is a longitudinal shaft 3| formed with fluted roller portions 32 which are disposed subadjacent the respective rollers 30. Journaled in the bearing blocks 11 is a longitudinal shaft '33 formed with fluted roller portions 34 which are disposed subadjacent designatesthebase of the drafting machine, and |2, |3 desigr nate respective pedestals secured to said base.- Designated at |4, |5 are respective parallel in;

2 the respective rollers 29. Journaledin the bear mg blocks I8 is alongitudinal shaft 35 formed with a continuous roller element 36. J ournaled in the bearing blocks I9 below the: rollers 28 is" a longitudinal shaft 38 disposed subadjacentthe respective rollers 28. Journaled in the bearing blocks |9 below the rollers 21 is a longitudinal shaft 39 formed with fluted roller portions 40 disposed subadj-acent the respective rollers 21.

The. right end portion of shaft 3|, as viewedv in Figure 2, is connected to a suitable driving means, not shown. The left end of shaft'3l .i'sj drivingly coupled to the left end of shaft33 by a speed-reducing gear train," comprising a small. gear 4| carried by shaft 3| which meshes with" a large gear 42. Gear 42 carries coaxially and integrally therewith a small gear '43 which meshes with a larger gear 44 carried by shaft 33'. Gear v42 is rotatably secured to a bracket bar 45 secured to an upstanding support bar 45' which, in turn, is secured to base The right end portion of shaft 3| is drivingly coupled to the rightend portion of shaft 39, as viewed in Figure 2, by a speed-reducing gear train comprising a small gear 41 carried by shaft 3| which meshes with a large gear 48. Gear 48 carries coaxia-lly and integrally therewith a small gear 49' which meshes with a larger gear Gear 48 is rotatably se- 59 carried by shaft 39. cured to a bracket bar 5| secured to an upstanding support bar 52, which in turn, is secured to base II. The right end portion coupled to the right end portion of shaft 31 by a gear train comprising a :gear 53 carried by shaft39, an idler gear 54 meshing with gear' 53, and a gear 55 carried by shaft 31 which meshes withidler gear 54. Idler gear is rotatably secured to a bracket bar 56 secured by a bolt '51 to the right hand-bearin block [9.

The left end portion of shaft 31 is drivingly, coupled to the left end portion of shaft 35-by a gear train comprising a gear 58 carried by shaft 31, an idler gear 59 meshing with gear' 58, and a gear 60 carried by shaft 35 which meshes with idler gear 59. Idler gear 59- is rotatably secured to a bracket bar 6| secured by a bolt 62 to an upstanding support bar 63' secured to base It will be apparent'that each of the shafts- 33, 35, 31-and 39 will rotate in the same direction as the driving shaft 3|, but at slower speeds than said driving shaft; Designated at 64 is a longitudinally extending cleaning roller carried on a'shaft 66 rotatably of 'shaft'39 is drivingly' supported in bearing seats formed in the ends of respective levers 65, 65 pivoted at their intermediate portionsto the respective pedestals I2 and [3, as shown at 31 in Figure 1. The inner ends of the levers 65, 65 carry enlarged weighted elements 68, biasing the levers 65 clockwise, as viewed in Figures 1 and 4. Roller 64 is disposed subadjacent the fluted rollers 32 and engages said fluted rollers with substantial pressure, whereby roller 64 is rotated by its frictional engagement with the fluted rollers, and clears the: fluted rollers of loose fibers and lint.

Overlying and engaging the shafts 23, '24, and 26 between the rollers carried on said shafts are respective bar members ,69, each, bar member 69 having connected thereto adepending slotted bar 10 which extends downwardly between the pressure rollers 29an'd and between the fluted rollers 32 and 34, as shown in Figure 5, and engages around a weighted lever 1| pivotally hooked beneath a pin 12 projecting from an adjacent pedestal 13.. Adjustably carried on each lever'll is a weight 13. By adjusting the positions of weights 13 on levers ll, the amount of downward pressure exerted by rollers 27, 28, 29 and 30 on the fluted rollers 40, 38, 34 and 32 may be regulated. V

V In operation, the partly finished roving 15 is fed from vertical bobbins. 74 rotatably mounted in positions rearwardly adjacent the drafting frame, as shown in Figure 1, through the rollers 21 40, the rollers 28, 38, over roller 36, through the rollers 29, 34 and through the relatively rapidlyrotating rollers 30, 32, the finished drafted roving, shown at 16, passing through an eye member .71 and being wound on a spool 18 which is rotated by a suitable spindle. Since the fluted rollers 32 rotate more rapidly than the fluted rollers 34, '35 and 40,'considerable draft is ap plied to the roving between the initial rollers 21, and the final rollers 30, 32. The pressure exerted on the roving by the various sets of rollers allows the roving to. be uniformly drawn out and simultaneously smooths the fibers thereof, preventing the formation of kinks or slugs in the yarn.

The main draft occurs between the fluted rollers .32 and the fluted rollers 34, since there is maximum difference in speed of rotation between these rollers. I further draft occurs oifthe rollersll) and 38.

Besides providing further draft, rollers 40, 38

and .34'act as sliprolls to take out and toip'revent slugs or kinks in the yarn The intermediate smooth roller 36' acts as a support for the drafted roving between rollers 34 and 38 and allows the tension .in the yarn to equalize itself between said rollers '34 and 38. The rotating spool 18 provides a slight amount of twist and final draft to the finished yarn.

The above-described drafting machine is particularly suitable for finishing fine yarns such as refining nylon roving, no previously employed machine having been found suitable for running fine nylon yarn.

While a specific embodiment of a long-draft yarn-spinning frame has been disclosed in the foregoing description, it is understood thatvarious modifications within the spirit of the invention may occur to those skilled in the art. Therefore, it is intended that no limitations be placed on the invention except as defined by the scope of the appended claims.

What is claimed is:

1 In a spinning frame, a 'roving-drafting ap- However, a certain amount of 3 i paratus of the character described, comprising a first pair of fluted rolls, a second pair of fluted rolls, a smooth roll located between said first and second pairs, all of the rolls being parallel and being coplanar, a first gear train coupling the outer roll of the second pair to the'outer roll of the first pair, a second gear train coupling the outer roll of the second pair tothe inner roll of: the second pair, both of said gear trains being formed and arranged to drive said outer roll of the first pair and said inner roll of the second pairin-the same-direction but at reduced speed with respect to the outer roll of the second pair,

athird gear train coupling the outer roll of the first pair to the inner roll of the first pair for simultaneous rotation in the same direction, a fourth gear train coupling the smooth roll to the inner roll of the first pair for simultaneous rotation in the same direction, respective pressure rolls overlying and engaging the respective fluted'rolls, a cleaning roller disposed in subadjacency to andparallel with the first pair' of fluted rolls, pivotedlevers sup-porting said roller; said levers being mounted for movement about an axis parallel with the axes of the first pair of fluted rolls and weighted elements associated with said levers for retaining said roller in frictional engagement of the outer roll of the first pair, the rollers of each pair being spaced a distance less than the space between pairs;

2. In a spinning frame, a roving-drafting ap-- paratus of the character described, comprising a first pair of fluted rolls, a second pair of fluted rolls, a smooth roll located between said first and second pairs, all of the rolls being parallel and being coplanar, a first gear train coupling the outer roll of the second pair'to the outer the outer roll of the second pair to the inner roll of the second pair, both of said gear trains being formed and arranged to drive said outer roll of the first pair and said inner roll of the second pair in the same direction but at reduced speed with respect to the outer roll of the second pair,

a third gear train coupling theouter roll of the first pair to the inner roll ofthe first pair for simultaneous rotation in the samedirection, a

fourth gear train coupling the smooth roll to the inner roll of the first pair for simultaneous rotation in the same direction, a frame pivotally overlying the fluted rolls, pressure rollers 'rotatably journaled in said frame, said pressure rollers being respectively vertically aligned with the fluted-rolls, adjustable'w'eight means operatively connected to'said frame for retaining said pressure rollers in engagement with the fluted rolls and acleaning roller pivo-tally disposed in subadjacency to and parallel with the outer roll ofthe first pair of fluted rolls and weighted elements associated with said cleaning roller for retaining said roller in frictional engagementof the outer roll of the first pair, the rollers of each pair being spaced a distance less than the space between pairs; 7

; -3.- In a spinning frame, a roving-drafting"apparatus of the character described comprising a first pair of closely spaced fluted rolls, a second pair of closely spaced fluted rolls spaced from said first pair by a. distance greater than the space between the rolls of the respective pairs, a

smooth roll located between said first and second pairs, all of the rolls beingparallel and being coplanar, means coupling the outer roll .of the,

second pair to the outer roll of the first pair,

.5 means coupling the outer roll of the second pair to the inner roll of the second pair, said coupling means being formed and arranged to drive said outer roll of the first pair and said inner roll of the second pair in the same direction but at reduced speed with respect to the outer roll of the second pair, means coupling the outer roll of the first pair to the inner roll of the first pair for simultaneous rotation in the same direction, means coupling the smooth roll to the inner roll of the first pair for simultaneous rotation in the same direction, and respective pressure rolls overlying and engaging the respective fluted rolls.

4. In a spinning frame, a roving-drafting apparatus of the character described comprising a first pair of fluted rolls, a second pair of fluted rolls, said first pair of rolls being spaced from said second pair by a distance greater than the space between the rolls of the respective pairs, a smooth roll located between said first and second pairs, all of the rolls being parallel and being coplanar, a first gear train coupling the outer roll of the second pair to the outer roll of the first pair, a second gear train coupling the outer roll of the second pair to the inner roll of the second pair, both of said gear trains being formed and arranged to drive said outer roll of the first pair and said inner roll of the second pair in the same direction but at reduced speed with respect to the outer roll of the second pair, a third gear train coupling the outer roll of the first pair to the inner roll of the first pair for simultaneous rotation in the same direction, a fourth gear train coupling the smooth roll to theinner roll of the first pair for simultaneous rotation in the same direction, and respective pressure rolls overlying and engaging the respective fluted rolls.

JAMES D. FRIDAY.

WILLIAM F. STILWELL.

References Cited in the file of this patent UNITED STATES PATENTS Number Name Date 1,407,555 McGinnis Feb. 21, 1922 1,534,071 Morse Apr. 21, 1925 1,554,987 Butler Sept. 29, 1925 2,076,609 Adams Apr. 13, 1937 2,107,818 Elzer Feb. 8, 1938 

